[3] Union City Township was organized in 1852.

[4] The township is named from an early settlement on the north side of the Upper Iowa River above the mouth of French Creek.

[5] Union City Township covers an area of 30.69 square miles (79.5 km2) and contains no incorporated settlements.

According to the USGS, it contains three cemeteries: Mount Hope, Portland Prairie and Wheatland.

This article about the geography of Allamakee County, Iowa is a stub.